Vortex XS154-60-LR Worm Gear Reducer - 60:1 Ratio, Belt-Drive Input 2.3/4" The 4/3V530 has a 3/8"

The 4/3V530 has a 3/8" width

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6/B78 is a standardized industry size

Megadyne 4/D420 Banded V-Belt

Vortex XS154-60-LR Worm Gear Reducer - 60:1 Ratio, Belt-Drive Input 2.3/4" The 4/3V530 has a 3/8"The Vortex XS154 60 LR is a worm gear speed reducer with a 60: 1 nominal ratio (exact ratio 60. 0: 1) and 1. 54 inch center distance, configured for belt or chain drive on the input side. The 0. 625 inch input shaft and 0. 75 inch output shaft both have keyways for sheaves and couplings. Output is oriented for double ended output. Specifications Specification Value Part Number Vortex XS154 60 LR Series Vortex XS Series Nominal Ratio 60: 1 Exact Ratio